- Chroniques lunaires - Levana
- Chroniques lunaires - livre 1 : Cinder
- Chroniques lunaires - livre 2,5 : L'armée de la reine
- Chroniques lunaires - livre 4 : Winter
- Chronoblood Chronicles: Prophecy of the Gladiator
- Cinder
- Cindrill
- Circa Now
- Circumstellar
- Citrus
- City 1
- City Eye
- City of Fury
- City of Kaiju
- City of Loons
- City of Ruins
- City of Shattered Light
- Citādie
- Ciudad Latino
- CLAN
- Clapman - Tome II
- Clara Hörbiger e il condottiero
- Clara Hörbiger e l'armata cadavere
- Clara Hörbiger e l'invasione dei Seleniti
- Clara Hörbiger e la battaglia di Padova
- Clara Hörbiger e la cripta meccanica
- Clara Hörbiger e le legioni dei vivi, le legioni dei morti
- Clash The Greatest Tournament
- Class Pet Catastrophe
- Class: Joyride
- Class: The Stone House
- Class: What She Does Next Will Astound You
- Cleo & Leo
- Cleo Porter and the Body Electric
- Click'd
- Clickety-Click
- Cliky - Tome 3
- Cliky, l'énigme numérique
- Cliky, le crack des réseaux
- Cloakers
- Clock City
- Clone One
- Clone Three
- Clone Two
- Close Encounters with This Weird Robot Thing
- Cloud 2.0
- Clouds and Darkness
- Clouds of Phoenix
- Code 47 to BREV Force Controller the Final Battle
- Code Blue
- Code Name R.A.E
- Code Name: Silence
- Code Red
- Coffee Can Kill Ya!
- Cogito
- Coins for Charon
- Cold Between Stars
- Cold Burn of Magic
- Cold Falling White
- Cold Snap Imminent
- Cold the Night, Fast the Wolves
- Cold Winter's Magic
- Coleman: A Watcher Series Mini Novella
- Coleman: A Watcher Series Mini Novella
- Collide
- Colliding Souls
- Colonization
- Colonize - Volume 1
- Colossal: Issue #1 (Book 1 of The Colossal Series)
- Columbia Lastname: First Girl Colonist on Mars
- Come and Play! (3)
- Come Lucky April
- Comet's Curse
- Commander Reilly #21: Prophet der Verräter: Chronik der Sternenkrieger
- Como enlouquecer seu professor de física
- Companion World
- Company Daughter
- Complete Adventure Venus Series of Edgar Rice Burroughs
- Complete John Carter of Mars of Edgar Rice Burroughs
- Complete Science Adventure of H Beam Piper (Illustrated)
- Complete Science Fantasy of Philip K. Dick
- Complete Science Thriller of Murray Leinster
- Complete Time Traders Science Fantasy of Andre Norton
- Complex 48: Underground Book 1
- Seconde terre - Tome 3
- Compu-M.EC.H. Quarterly
- Compulsive Directive
- Con los pies en el polvo
- Concealed
- Concessione d’armi (Libro #8 in l’anello dello stregone)
- Conductoid
- Conduit
- Confessa
- Confidential Reports About the Mysterious Troopers
- Confusion
- Connecting
- Conquer
- Consequences
- Contact
- Contagion
- Contained (Evolution Series Book 5)
- Contributor
- Curses of Glass
- Convergent
- Cool Kids
- Copanatec
- Corpora
- Corruption (Part 2 of the Black & White Trilogy)
- Corsets and Aliens: part one
- Cosmic Cat
- Cosmic Conundrum
- Cosmic Storm
- Cosmodots: 02-Vorpin Trees
- Costumes & Copiers
- Countdown Day
- Counter Program
- Counterattack